If you are using the WP Store Locator plugin to add locations and Google Maps to your site, then you can have automatic schema.org structured data markup as well.
It can be done by the integration of Schema Local Business extension we added so that it can pull the saved data by WP Store Locator.
What is WP Store Locator?
WP Store Locator is a powerful and easy to use location management system, and it’s a free WordPress plugin.
Here is a link where you can download WP Store Locator plugin.
If you have WP Store Locator installed and active on your site, the Local Business extension will automatically detect it and show it under the Integrations settings tab.
* Make sure WP Store Locator setting is set to Enabled.